/* setup.c
* Linux CAN-bus device driver.
* Written by Arnaud Westenberg email:arnaud@wanadoo.nl
+ * Rewritten for new CAN queues by Pavel Pisa - OCERA team member
+ * email:pisa@cmp.felk.cvut.cz
* This software is released under the GPL-License.
- * Version 0.7 6 Aug 2001
+ * Version lincan-0.2 9 Jul 2003
*/
-#include <linux/autoconf.h>
-#if defined (CONFIG_MODVERSIONS) && !defined (MODVERSIONS)
-#define MODVERSIONS
-#endif
-
-#if defined (MODVERSIONS)
-#include <linux/modversions.h>
-#endif
-
-#include <linux/malloc.h>
-#include <linux/fs.h>
-
-#include "../.support"
-
+#include "../include/can.h"
+#include "../include/can_sysdep.h"
#include "../include/main.h"
+#include "../include/devcommon.h"
#include "../include/setup.h"
-#include "../include/pip.h"
-#include "../include/pccan.h"
-#include "../include/smartcan.h"
-#include "../include/pc-i03.h"
-#include "../include/pcm3680.h"
-#include "../include/m437.h"
-#include "../include/template.h"
-#include "../include/i82527.h"
-#include "../include/aim104.h"
-#include "../include/pcccan.h"
+#include "../include/finish.h"
extern int sja1000_register(struct chipspecops_t *chipspecops);
extern int sja1000p_register(struct chipspecops_t *chipspecops);
extern int i82527_register(struct chipspecops_t *chipspecops);
-extern int template_register(struct hwspecops_t *hwspecops);
-extern int pip5_register(struct hwspecops_t *hwspecops);
-extern int pip6_register(struct hwspecops_t *hwspecops);
-extern int smartcan_register(struct hwspecops_t *hwspecops);
-extern int pccanf_register(struct hwspecops_t *hwspecops);
-extern int pccand_register(struct hwspecops_t *hwspecops);
-extern int pccanq_register(struct hwspecops_t *hwspecops);
-extern int nsi_register(struct hwspecops_t *hwspecops);
-extern int cc104_register(struct hwspecops_t *hwspecops);
-extern int pci03_register(struct hwspecops_t *hwspecops);
-extern int pcm3680_register(struct hwspecops_t *hwspecops);
-extern int aim104_register(struct hwspecops_t *hwspecops);
-extern int pcccan_register(struct hwspecops_t *hwspecops);
-extern int ssv_register(struct hwspecops_t *hwspecops);
int init_device_struct(int card);
-int init_hwspecops(int card);
-int init_chip_struct(int card);
-int init_obj_struct(int card, int chip);
-int init_chipspecops(int card, int chipnr);
+int init_hwspecops(struct candevice_t *candev);
+int init_chip_struct(struct candevice_t *candev);
+int init_obj_struct(struct candevice_t *candev, struct chip_t *hostchip, int minorbase);
+int init_chipspecops(struct candevice_t *candev, int chipnr);
-int add_mem_to_list(void *address_p)
+void *can_checked_malloc(size_t size)
{
struct mem_addr *mem_new;
+ void *address_p;
+
+ address_p=kmalloc(size,GFP_KERNEL);
+ if(address_p == NULL) {
+ CANMSG("can_checked_malloc: out of the memory\n");
+ return NULL;
+ }
#ifdef DEBUG_MEM
- DEBUGMSG("add_mem_to_list %p, mem_head=%p\n",address_p, mem_head);
- return 0;
+ DEBUGMSG("can_checked_malloc: allocated %d bytes at %p, mem_head=%p\n",
+ (int)size, address_p, mem_head);
#endif
mem_new=(struct mem_addr *)kmalloc(sizeof(struct mem_addr),GFP_KERNEL);
if (mem_new == NULL) {
- CANMSG("Memory list error.\n");
- return -ENOMEM;
+ CANMSG("can_checked_malloc: memory list allocation error.\n");
+ kfree(address_p);
+ return NULL;
}
mem_new->next=mem_head;
mem_new->address=address_p;
+ mem_new->size=size;
mem_head=mem_new;
- return 0;
+ return address_p;
}
-int del_mem_from_list(void *address_p)
+int can_checked_free(void *address_p)
{
- struct mem_addr *mem_search=NULL;
- struct mem_addr *mem_delete=NULL;
+ struct mem_addr **mem_pptr;
+ struct mem_addr *mem_del=NULL;
#ifdef DEBUG_MEM
- DEBUGMSG("del_mem_from_list %p, mem_head=%p\n", address_p, mem_head);
- return 0;
+ DEBUGMSG("can_checked_free %p, mem_head=%p\n", address_p, mem_head);
#endif
-
- mem_search = mem_head;
- if (mem_head->address == address_p) {
- kfree(mem_head->address);
- mem_head=mem_head->next;
- kfree(mem_search);
- }
- else {
- while (mem_search->next->address != address_p)
- mem_search=mem_search->next;
- kfree(mem_search->next->address);
- mem_delete=mem_search->next;
- mem_search->next=mem_search->next->next;
- kfree(mem_delete);
+ for(mem_pptr = &mem_head; (mem_del = *mem_pptr); mem_pptr = &mem_del->next) {
+ if (mem_del->address != address_p)
+ continue;
+ *mem_pptr=mem_del->next;
+ kfree(mem_del);
+ kfree(address_p);
+ return 0;
}
- return 0;
+
+ CANMSG("can_checked_free: address %p not found on the mem list\n", address_p);
+
+ kfree(address_p);
+ return -1;
}
-int del_mem_list(void)
+int can_del_mem_list(void)
{
- struct mem_addr *mem_old;
+ struct mem_addr *mem;
#ifdef DEBUG_MEM
- DEBUGMSG("del_mem_list, mem_head=%p\n", mem_head);
- return 0;
+ DEBUGMSG("can_del_mem_list, mem_head=%p\n", mem_head);
#endif
+ if(mem_head == NULL) {
+ CANMSG("can_del_mem_list: no entries on the list - OK\n");
+ return 0;
+ }
- while (mem_head->next != NULL) {
- mem_old=mem_head;
- kfree(mem_old->address);
- mem_head=mem_old->next;
- kfree(mem_old);
+ while((mem=mem_head) != NULL) {
+ mem_head=mem->next;
+ CANMSG("can_del_mem_list: deleting %p with size %d\n",
+ mem->address, (int)mem->size);
+ kfree(mem->address);
+ kfree(mem);
}
return 0;
}
+int can_request_io_region(unsigned long start, unsigned long n, const char *name)
+{
+ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0))
+ if(check_region(start,n)) return 0;
+ request_region(start,n,name);
+ return 1;
+ #else
+ return (request_region(start,n,name))?1:0;
+ #endif
+}
+
+void can_release_io_region(unsigned long start, unsigned long n)
+{
+ release_region(start,n);
+}
+
+int can_request_mem_region(unsigned long start, unsigned long n, const char *name)
+{
+ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0))
+ return 1;
+ #else
+ return (request_mem_region(start,n,name))?1:0;
+ #endif
+}
+
+void can_release_mem_region(unsigned long start, unsigned long n)
+{
+ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0))
+ return;
+ #else
+ release_mem_region(start,n);
+ #endif
+}
+
+/* This function shifts all base address structures acording to address
+ translation between physical and virtual address mappings */
+int can_base_addr_fixup(struct candevice_t *candev, unsigned long new_base)
+{
+ unsigned long offs;
+ int i, j;
+
+ offs=new_base-candev->dev_base_addr;
+ candev->dev_base_addr=new_base;
+ for(i=0;i<candev->nr_all_chips;i++){
+ candev->chip[i]->chip_base_addr += offs;
+ for(j=0;j<candev->chip[i]->max_objects;j++)
+ candev->chip[i]->msgobj[j]->obj_base_addr += offs;
+ }
+ return 0;
+}
+
/* The function init_hw_struct is used to initialize the hardware structure. */
int init_hw_struct(void)
{
*/
int init_device_struct(int card)
{
- hardware_p->candevice[card]=(struct candevice_t *)kmalloc(sizeof(struct candevice_t),GFP_KERNEL);
- if (hardware_p->candevice[card]==NULL)
+ struct candevice_t *candev;
+ int ret;
+
+ candev=(struct candevice_t *)can_checked_malloc(sizeof(struct candevice_t));
+ if (candev==NULL)
return -ENOMEM;
- else
- if ( add_mem_to_list(hardware_p->candevice[card]) )
- return -ENOMEM;
- candevices_p[card]=hardware_p->candevice[card];
+ memset(candev, 0, sizeof(struct candevice_t));
- hardware_p->candevice[card]->hwname=hw[card];
- hardware_p->candevice[card]->io_addr=io[card];
+ hardware_p->candevice[card]=candev;
+ candev->candev_idx=card;
- hardware_p->candevice[card]->hwspecops=(struct hwspecops_t *)kmalloc(sizeof(struct hwspecops_t),GFP_KERNEL);
- if (hardware_p->candevice[card]->hwspecops==NULL)
- return -ENOMEM;
- else
- if ( add_mem_to_list(hardware_p->candevice[card]->hwspecops) )
- return -ENOMEM;
+ candev=candev;
+
+ candev->hwname=hw[card];
+ candev->io_addr=io[card];
+ candev->dev_base_addr=io[card];
+
+ candev->hwspecops=(struct hwspecops_t *)can_checked_malloc(sizeof(struct hwspecops_t));
+ if (candev->hwspecops==NULL)
+ goto error_nomem;
- if (init_hwspecops(card))
- return -ENODEV;
+ memset(candev->hwspecops, 0, sizeof(struct hwspecops_t));
- if (candevices_p[card]->hwspecops->init_hw_data(card))
- return -ENODEV;
+ if (init_hwspecops(candev))
+ goto error_nodev;
- if (init_chip_struct(card))
- return -ENODEV;
+ if (candev->hwspecops->init_hw_data(candev))
+ goto error_nodev;
+
+ if ((ret=init_chip_struct(candev)))
+ goto error_chip;
return 0;
+
+ error_nodev:
+ ret=-ENODEV;
+ error_chip:
+ candevice_done(candev);
+ goto error_both;
+
+ error_nomem:
+ ret=-ENOMEM;
+
+ error_both:
+ hardware_p->candevice[card]=NULL;
+ can_checked_free(candev);
+ return ret;
+
}
/* The function init_chip_struct is used to initialize all chip_t structures
* on one hardware board.
*/
-int init_chip_struct(int card)
+int init_chip_struct(struct candevice_t *candev)
{
+ struct chip_t *chip;
static int irq_count=0;
int i=0;
/* Alocate and initialize the chip structures */
- for (i=0; i < candevices_p[card]->nr_82527_chips+candevices_p[card]->nr_sja1000_chips; i++) {
- candevices_p[card]->chip[i]=(struct chip_t *)kmalloc(sizeof(struct chip_t),GFP_KERNEL);
- if (candevices_p[card]->chip[i]==NULL)
- return -ENOMEM;
- else
- if ( add_mem_to_list(candevices_p[card]->chip[i]) )
- return -ENOMEM;
-
- candevices_p[card]->chip[i]->chipspecops=(struct chipspecops_t *)kmalloc(sizeof(struct chipspecops_t),GFP_KERNEL);
- if (candevices_p[card]->chip[i]->chipspecops==NULL)
+ for (i=0; i < candev->nr_all_chips; i++) {
+ candev->chip[i]=(struct chip_t *)can_checked_malloc(sizeof(struct chip_t));
+ if ((chip=candev->chip[i])==NULL)
return -ENOMEM;
- else
- if ( add_mem_to_list(candevices_p[card]->chip[i]->chipspecops) )
- return -ENOMEM;
-
- chips_p[irq_count]=candevices_p[card]->chip[i];
- candevices_p[card]->chip[i]->hostdevice=candevices_p[card];
- candevices_p[card]->chip[i]->chip_irq=irq[irq_count];
- candevices_p[card]->chip[i]->flags=0x0;
- candevices_p[card]->hwspecops->init_chip_data(card,i);
+ memset(chip, 0, sizeof(struct chip_t));
+
+ chip->write_register=candev->hwspecops->write_register;
+ chip->read_register=candev->hwspecops->read_register;
- if (init_chipspecops(card,i))
+ chip->chipspecops=can_checked_malloc(sizeof(struct chipspecops_t));
+ if (chip->chipspecops==NULL)
+ return -ENOMEM;
+
+ chips_p[irq_count]=chip;
+ chip->chip_idx=i;
+ chip->hostdevice=candev;
+ chip->chip_irq=irq[irq_count];
+ chip->baudrate=baudrate[irq_count]*1000;
+ if(!chip->baudrate)
+ chip->baudrate=baudrate[0]*1000;
+ chip->flags=0x0;
+
+ candev->hwspecops->init_chip_data(candev,i);
+
+ if (init_chipspecops(candev,i))
return -ENODEV;
-
- init_obj_struct(card, irq_count);
+
+ init_obj_struct(candev, chip, minor[irq_count]);
irq_count++;
}
return 0;
}
-int init_obj_struct(int card, int chip)
+int init_obj_struct(struct candevice_t *candev, struct chip_t *hostchip, int minorbase)
{
+ struct canque_ends_t *qends;
static int obj_count=0;
- int i=0,max_objects=0;
+ int i,max_objects;
+ struct msgobj_t *obj;
- if (!strcmp(chips_p[chip]->chip_type,"i82527"))
- max_objects=15;
- else
- max_objects=1;
+ max_objects=hostchip->max_objects;
for (i=0; i<max_objects; i++) {
- chips_p[chip]->msgobj[i]=(struct msgobj_t *)kmalloc(sizeof(struct msgobj_t),GFP_KERNEL);
- if (chips_p[chip]->msgobj[i] == NULL)
+ obj=(struct msgobj_t *)can_checked_malloc(sizeof(struct msgobj_t));
+ hostchip->msgobj[i]=obj;
+ if (obj == NULL)
return -ENOMEM;
- else
- if ( add_mem_to_list(chips_p[chip]->msgobj[i]) )
- return -ENOMEM;
+
+ memset(obj, 0, sizeof(struct msgobj_t));
- chips_p[chip]->msgobj[i]->fifo=(struct canfifo_t *)kmalloc(sizeof(struct canfifo_t),GFP_KERNEL);
- if (chips_p[chip]->msgobj[i]->fifo == NULL)
- return -ENOMEM;
- else
- if ( add_mem_to_list(chips_p[chip]->msgobj[i]->fifo) )
- return -ENOMEM;
+ atomic_set(&obj->obj_used,0);
+ INIT_LIST_HEAD(&obj->obj_users);
+ init_timer(&obj->tx_timeout);
- if (minor[0] == -1) {
- objects_p[obj_count]=chips_p[chip]->msgobj[i];
- objects_p[obj_count]->hostchip=chips_p[chip];
- objects_p[obj_count]->object=i+1;
- objects_p[obj_count]->minor=obj_count;
- }
- else {
- objects_p[minor[chip]+i]=chips_p[chip]->msgobj[i];
- objects_p[minor[chip]+i]->hostchip=chips_p[chip];
- objects_p[minor[chip]+i]->object=i+1;
- objects_p[minor[chip]+i]->minor=minor[chip]+i;
- }
+ qends = (struct canque_ends_t *)can_checked_malloc(sizeof(struct canque_ends_t));
+ if(qends == NULL) return -ENOMEM;
+ memset(qends, 0, sizeof(struct canque_ends_t));
+ obj->hostchip=hostchip;
+ obj->object=i+1;
+ obj->qends=qends;
+ obj->tx_qedge=NULL;
+ obj->tx_slot=NULL;
+ obj->obj_flags = 0x0;
+
+ canqueue_ends_init_chip(qends, hostchip, obj);
+
+ if (minorbase == -1) minorbase=obj_count;
+ if ((minorbase >= 0) && (minorbase+i<MAX_TOT_MSGOBJS)){
+ objects_p[minorbase+i]=obj;
+ obj->minor=minorbase+i;
+ } else obj->minor=-1;
- chips_p[chip]->msgobj[i]->flags = 0x0;
-
- candevices_p[card]->hwspecops->init_obj_data(chip,i);
+ candev->hwspecops->init_obj_data(hostchip,i);
obj_count++;
}
}
-int init_hwspecops(int card)
+int init_hwspecops(struct candevice_t *candev)
{
- #ifdef TEMPLATE
- if (!strcmp(candevices_p[card]->hwname,"template")) {
- template_register(candevices_p[card]->hwspecops);
- }
- #endif
- #ifdef PIP
- if (!strcmp(candevices_p[card]->hwname,"pip5")) {
- pip5_register(candevices_p[card]->hwspecops);
- }
- else if (!strcmp(candevices_p[card]->hwname,"pip6")) {
- pip6_register(candevices_p[card]->hwspecops);
- }
- #endif
- #ifdef SMARTCAN
- if (!strcmp(candevices_p[card]->hwname,"smartcan")) {
- smartcan_register(candevices_p[card]->hwspecops);
- }
- #endif
- #ifdef NSI
- if (!strcmp(candevices_p[card]->hwname,"nsican")) {
- nsi_register(candevices_p[card]->hwspecops);
- }
- #endif
- #ifdef CC104
- if (!strcmp(candevices_p[card]->hwname,"cc104")) {
- cc104_register(candevices_p[card]->hwspecops);
- }
- #endif
- #ifdef AIM104
- if (!strcmp(candevices_p[card]->hwname,"aim104")) {
- aim104_register(candevices_p[card]->hwspecops);
- }
- #endif
- #ifdef PCI03
- if (!strcmp(candevices_p[card]->hwname,"pc-i03")) {
- pci03_register(candevices_p[card]->hwspecops);
- }
- #endif
- #ifdef PCM3680
- if (!strcmp(candevices_p[card]->hwname,"pcm3680")) {
- pcm3680_register(candevices_p[card]->hwspecops);
- }
- #endif
- #ifdef PCCAN
- if (!strcmp(candevices_p[card]->hwname,"pccan-f") |
- !strcmp(candevices_p[card]->hwname,"pccan-s") ) {
- pccanf_register(candevices_p[card]->hwspecops);
- }
- if (!strcmp(candevices_p[card]->hwname,"pccan-d")) {
- pccand_register(candevices_p[card]->hwspecops);
- }
- if (!strcmp(candevices_p[card]->hwname,"pccan-q")) {
- pccanq_register(candevices_p[card]->hwspecops);
- }
- #endif
- #ifdef M437
- if (!strcmp(candevices_p[card]->hwname,"m437")) {
- m437_register(candevices_p[card]->hwspecops);
- }
- #endif
- #ifdef PCCCAN
- if (!strcmp(candevices_p[card]->hwname,"pcccan")) {
- pcccan_register(candevices_p[card]->hwspecops);
- }
- #endif
- #ifdef SSV
- if (!strcmp(candevices_p[card]->hwname,"ssv")) {
- ssv_register(candevices_p[card]->hwspecops);
+ const struct boardtype_t *brp;
+
+ brp = boardtype_find(candev->hwname);
+
+ if(!brp) {
+ CANMSG("Sorry, hardware \"%s\" is currently not supported.\n",candev->hwname);
+ return -EINVAL;
}
- #endif
+
+ brp->board_register(candev->hwspecops);
+
return 0;
}
-int init_chipspecops(int card, int chipnr)
+int init_chipspecops(struct candevice_t *candev, int chipnr)
{
- if (!strcmp(candevices_p[card]->chip[chipnr]->chip_type,"i82527")) {
- i82527_register(candevices_p[card]->chip[chipnr]->chipspecops);
+ if (!strcmp(candev->chip[chipnr]->chip_type,"i82527")) {
+ candev->chip[chipnr]->max_objects=15;
+ i82527_register(candev->chip[chipnr]->chipspecops);
}
- if (!strcmp(candevices_p[card]->chip[chipnr]->chip_type,"sja1000")) {
- sja1000_register(candevices_p[card]->chip[chipnr]->chipspecops);
+ if (!strcmp(candev->chip[chipnr]->chip_type,"sja1000")) {
+ candev->chip[chipnr]->max_objects=1;
+ sja1000_register(candev->chip[chipnr]->chipspecops);
}
- if (!strcmp(candevices_p[card]->chip[chipnr]->chip_type,"sja1000p")) {
- sja1000p_register(candevices_p[card]->chip[chipnr]->chipspecops);
+ if (!strcmp(candev->chip[chipnr]->chip_type,"sja1000p")) {
+ candev->chip[chipnr]->max_objects=1;
+ sja1000p_register(candev->chip[chipnr]->chipspecops);
}
return 0;
}
+
+#ifndef CAN_WITH_RTL
+
+int can_chip_setup_irq(struct chip_t *chip)
+{
+ if(chip==NULL)
+ return -1;
+ if(!chip->chipspecops->irq_handler)
+ return 0;
+
+ if (request_irq(chip->chip_irq,chip->chipspecops->irq_handler,SA_SHIRQ,DEVICE_NAME,chip))
+ return -1;
+ else {
+ DEBUGMSG("Registered interrupt %d\n",chip->chip_irq);
+ chip->flags |= CHIP_IRQ_SETUP;
+ }
+ return 1;
+}
+
+
+void can_chip_free_irq(struct chip_t *chip)
+{
+ if((chip->flags & CHIP_IRQ_SETUP) && (chip->chip_irq>=0)) {
+ free_irq(chip->chip_irq, chip);
+ chip->flags &= ~CHIP_IRQ_SETUP;
+ }
+}
+
+#endif /*CAN_WITH_RTL*/
projects / lincan.git / blobdiff